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Development of an Escherichia coli whole cell catalyst harboring conjugated polyketone reductase from Candida glabrata for synthesis of d-(−)-pantolactone. Process Biochem 2022. [DOI: 10.1016/j.procbio.2021.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang QH, Fang Y, Luo WF, Huang LN. Biocatalytic kinetic resolution of d,l-pantolactone by using a novel recombinant d-lactonase. RSC Adv 2020; 11:721-725. [PMID: 35423680 PMCID: PMC8693235 DOI: 10.1039/d0ra09053k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/17/2020] [Indexed: 11/21/2022] Open
Abstract
d-Pantolactone is a key chiral intermediate for the synthesis of d-pantothenic acid and its derivatives. Biocatalytic kinetic resolution of d,l-pantoyl lactone using d-lactonase is an efficient route to synthesize d-pantolactone. In this study, we report the expression of a novel d-lactonase TSDL in Escherichia coli host. The recombinant TSDL exhibited high hydrolysis activity and enantioselectivity toward d-pantolactone. The reaction conditions of the recombinant TSDL-catalyzed kinetic resolution of d,l-pantolactone was systematically investigated by whole cell biocatalysis. In addition, a preparative-scale reaction for bioproduction of d-pantoic acid was examined under optimized reaction conditions. This study presented an alternative enzymatic process for kinetic resolution of d,l-pantolactone. d-Pantolactone is a key chiral intermediate for the synthesis of d-pantothenic acid and its derivatives.![]()
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Affiliation(s)
- Qiu-Hua Zhang
- Brother Research Center, Jiangxi Brother Pharmaceutical Co.,Ltd Jiujiang 332700 China
| | - Yi Fang
- Brother Research Center, Jiangxi Brother Pharmaceutical Co.,Ltd Jiujiang 332700 China
| | - Wen-Fang Luo
- Brother Research Center, Jiangxi Brother Pharmaceutical Co.,Ltd Jiujiang 332700 China
| | - Liu-Nv Huang
- Brother Research Center, Jiangxi Brother Pharmaceutical Co.,Ltd Jiujiang 332700 China
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Li T, Li R, Zhu T, Cui X, Li C, Cui Y, Wu B. Improving the System Performance of the Asymmetric Biosynthesis of d-Pantoic Acid by Using Artificially Self-Assembled Enzymes in Escherichia coli. ACS Biomater Sci Eng 2019; 6:219-224. [DOI: 10.1021/acsbiomaterials.9b01754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Li
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
- University of Chinese Academy of Sciences, Beijing 100101, PR China
| | - Ruifeng Li
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
- University of Chinese Academy of Sciences, Beijing 100101, PR China
| | - Tong Zhu
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
- University of Chinese Academy of Sciences, Beijing 100101, PR China
| | - Xuexian Cui
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
- University of Chinese Academy of Sciences, Beijing 100101, PR China
| | - Chuijian Li
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yinglu Cui
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Bian Wu
- CAS Key Laboratory of Microbial Physiological and Metabolic Engineering, State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
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Asymmetric reduction of ketopantolactone using a strictly (R)-stereoselective carbonyl reductase through efficient NADPH regeneration and the substrate constant-feeding strategy. Biotechnol Lett 2017; 39:1741-1746. [PMID: 28828561 DOI: 10.1007/s10529-017-2415-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/20/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVES To characterize a recombinant carbonyl reductase from Saccharomyces cerevisiae (SceCPR1) and explore its use in asymmetric synthesis of (R)-pantolactone [(R)-PL]. RESULTS The NADPH-dependent SceCPR1 exhibited strict (R)-enantioselectivity and high activity in the asymmetric reduction of ketopantolactone (KPL) to (R)-PL. Escherichia coli, coexpressing SceCPR1 and glucose dehydrogenase from Exiguobacterium sibiricum (EsGDH), was constructed to fulfill efficient NADPH regeneration. During the whole-cell catalyzed asymmetric reduction of KPL, the spontaneous hydrolysis of KPL significantly affected the yield of (R)-PL, which was effectively alleviated by the employment of the substrate constant-feeding strategy. The established whole-cell bioreduction for 6 h afforded 458 mM (R)-PL with the enantiomeric excess value of >99.9% and the yield of 91.6%. CONCLUSIONS Escherichia coli coexpressing SceCPR1 and EsGDH efficiently catalyzed the asymmetric synthesis of (R)-PL through the substrate constant-feeding strategy.
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Li M, Yang LR, Xu G, Wu JP. Cloning and characterization of a novel lipase from Stenotrophomonas maltophilia GS11: The first member of a new bacterial lipase family XVI. J Biotechnol 2016; 228:30-36. [PMID: 27117245 DOI: 10.1016/j.jbiotec.2016.04.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 04/18/2016] [Accepted: 04/19/2016] [Indexed: 12/24/2022]
Abstract
Bacterial lipases are an important group of enzymes that offer enormous potential in organic synthesis, and there is considerable interest in identifying and developing novel bacterial lipases. In previous studies, strains of the genus Stenotrophomonas were proved to be potential source of lipases, but there is little genetic information describing lipase from the genus Stenotrophomonas. We have cloned and characterized a novel lipase (LipSM54), the first lipase described from the genus Stenotrophomonas. Enzymatic study showed that LipSM54 was a cold-active, solvent-tolerant and alkaline lipase. Using bioinformatics tools, LipSM54 was found to be related only to several putative lipases from different bacterial origins, none of which could be assigned to any previously described bacterial lipase family. LipSM54 and these related putative lipases share four conserved motifs around the catalytic residues. These motifs clearly distinguish them from the known bacterial lipase families. Consequently, LipSM54 is the first characterized member of the novel bacterial lipase family.
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Affiliation(s)
- Mu Li
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Ministry of Education, Wuhan, 430070, Hubei, People's Republic of China; College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Institute of Bioengineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Li-Rong Yang
- Institute of Bioengineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Gang Xu
- Institute of Bioengineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Jian-Ping Wu
- Institute of Bioengineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China.
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Abstract
Pantothenate, commonly referred to as vitamin B(5), is an essential molecule in the metabolism of living organisms and forms the core of coenzyme A. Unlike humans, some bacteria and plants are capable of de novo biosynthesis of pantothenate, making this pathway a potential target for drug development. Francisella tularensis subsp. tularensis Schu S4 is a zoonotic bacterial pathogen that is able to synthesize pantothenate but is lacking the known ketopantoate reductase (KPR) genes, panE and ilvC, found in the canonical Escherichia coli pathway. Described herein is a gene encoding a novel KPR, for which we propose the name panG (FTT1388), which is conserved in all sequenced Francisella species and is the sole KPR in Schu S4. Homologs of this KPR are present in other pathogenic bacteria such as Enterococcus faecalis, Coxiella burnetii, and Clostridium difficile. Both the homologous gene from E. faecalis V583 (EF1861) and E. coli panE functionally complemented Francisella novicida lacking any KPR. Furthermore, panG from F. novicida can complement an E. coli KPR double mutant. A Schu S4 ΔpanG strain is a pantothenate auxotroph and was genetically and chemically complemented with panG in trans or with the addition of pantolactone. There was no virulence defect in the Schu S4 ΔpanG strain compared to the wild type in a mouse model of pneumonic tularemia. In summary, we characterized the pantothenate pathway in Francisella novicida and F. tularensis and identified an unknown and previously uncharacterized KPR that can convert 2-dehydropantoate to pantoate, PanG.
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LplR, a repressor belonging to the TetR family, regulates expression of the L-pantoyl lactone dehydrogenase gene in Rhodococcus erythropolis. Appl Environ Microbiol 2012; 78:7923-30. [PMID: 22941082 DOI: 10.1128/aem.01583-12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The L-pantoyl lactone (L-PL) dehydrogenase (LPLDH) gene (lpldh) has been cloned from Rhodococcus erythropolis AKU2103, and addition of 1,2-propanediol (1,2-PD) was shown to be required for lpldh expression in this strain. In this study, based on an exploration of the nucleotide sequence around lpldh, a TetR-like regulator gene, which we designated lplR, was found upstream of lpldh, and three putative open reading frames existed between the two genes. Disruption of lplR led to 22.8 times higher lpldh expression, even without 1,2-PD induction, than that in wild-type R. erythropolis AKU2103 without 1,2-PD addition. Introduction of a multicopy vector carrying lplR (multi-lplR) into the wild-type and ΔlplR strains led to no detectable LPLDH activity even in the presence of 1,2-PD. The results of an electrophoretic mobility shift assay revealed that purified LplR bound to a 6-bp inverted-repeat sequence located in the promoter/operator region of the operon containing lpldh. These results indicated that LplR is a negative regulator in lpldh expression. Based on the clarification of the expression mechanism of lpldh, recombinant cells showing high LPLDH activity were constructed and used as a catalyst for the conversion of L-PL to ketopantoyl lactone. Finally, a promising production process of D-PL from DL-PL was constructed.
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Si D, Urano N, Nozaki S, Honda K, Shimizu S, Kataoka M. l-Pantoyl lactone dehydrogenase from Rhodococcus erythropolis: genetic analyses and application to the stereospecific oxidation of l-pantoyl lactone. Appl Microbiol Biotechnol 2012; 95:431-40. [DOI: 10.1007/s00253-012-3970-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/13/2012] [Accepted: 02/13/2012] [Indexed: 11/29/2022]
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